Apple Macintosh

Other

Google Chrome

Click on the Tools menu and select Options
Click the "Under the Hood" tab and locate the "Security" section
In the "Cookie settings" section, click the "Show cookies" button.

Select "Remove all" to delete all cookies from the list
(alternatively, you can remove all cookies created within a specific time
period by selecting the "Clear browsing data" option in the Tools menu).

To delete a specific cookie, simply select the website
that set the cookie from the list and click on "Remove".

Click on the Close button when you've finished.

Internet Explorer 7.x

Exit Internet Explorer 7, and then exit any instances of
Windows Explorer
Click Start, click Run, type inetcpl.cpl, and then press ENTER
On the General tab, click Delete under Browsing History in the Internet
Properties dialog box
In the Delete Browsing History dialog box, click Delete Cookies
In the Delete Cookies dialog box, click Yes.

Internet Explorer (all other versions)

Internet Explorer saves cookies in more than one location,
depending on the version of the browser and the version of Microsoft Windows
being used.

The best way to find and delete them is to close Internet
Explorer then use your file management software (such as Windows Explorer) and
search for a folder called 'cookies'.

Mozilla

Choose Cookie Manager from the Tools menu.
Choose Manage Stored Cookies.
Remove any cookie from the list, or remove all cookies.

Mozilla Firebird

Click on Tools, then Options
Select the Privacy icon in the left-hand panel
Click on Cookies
Click on Stored Cookies
To remove a single cookie click on the entry in the list and click on the Remove
Cookie button
To remove all cookies click on the Remove All Cookies button

Mozilla Firefox

Click on Tools, then Options (or Edit | Preferences on
Linux)
Select Privacy
In the Cookies panel, click on Show Cookies
To remove a single cookie click on the entry in the list and click on the Remove
Cookie button
To remove all cookies click on the Remove All Cookies button

Netscape Navigator 7.x

Choose Cookie Manager from the Tools menu.
Choose Manage Stored Cookies.
Remove any cookie from the list, or remove all cookies.

Netscape Navigator 6.x

Choose Cookie Manager from the Tools menu.
Choose Manage Stored Cookies.
Remove any cookie from the list, or remove all cookies.

Netscape Navigator 4.x

In Netscape, all cookies are stored into one file, called
Cookies.txt, in the user preferences folder, making them easy to find and
delete. The folder can be located by using your file management software to
search your hard disk drive for "cookies.txt".

Users of Netscape Navigator 4.x may also stop cookies from
being written to the hard drive, by making the cookies file read only. However,
even if the browser can't "write" cookies to the hard drive, it can still cache
them, and it may create a new cookie file.

Opera

To delete all cookies at the end of every session, select
it in the privacy settings under Tools > Preferences.
Click on Manage cookies to delete specific cookies or cookies from specific
domains.

To delete all cookies immediately, go to Delete private
data on the Tools menu.